Trail Running calendar near Castaic 2026-2027

Run the scenic Sean O'Brien Trail Races in Calabasas on January 31, 2026, with distances for every trail runner. The 100K is a Western States 100 qualifier, and options from 30K to 50 Miler promise challenge and community.

The Boney Mountain Trail Run will take place in Newbury Park on Saturday 7 February 2026. You can run between 7 and 21 kilometers.

The Boney Mountain Trail Run will take place in Newbury Park on Saturday 7 February 2026. You can run between 7 and 13 miles.

Celebrate Valentine’s Day with a scenic trail run in Griffith Park Los Angeles. Choose from 5k, 10k, 15k or half marathon loops and enjoy aid stations, a finisher medal, free photos and post race snacks.

Run rolling trails at Debs Park in the 4 Mile Hill Challenge, with a scenic 4 mile route, a spirited 2K youth climb and a green earth celebration. Note the event is currently listed as postponed.

Trail races at Tejon Ranch near Lebec California include 100k 50k 25k and 11k on fire roads with marked courses aid stations and chip timing. The event offers camping options a finish festival with food and a beer garden for 21 plus.

Pick a scenic 6K or adventurous 12K through Panorama Vista Preserve along the Kern River with flat fast stretches and bluff climbs. Chip timing, custom shirt and finisher medal plus pancakes and raffles make this a fun community run.

Run through an active limestone quarry at the Cemex Quarry Quest 5K in Rialto, where rugged terrain and towering industrial equipment create a thrilling backdrop. Enjoy a memorable race while supporting cancer awareness and fundraising.

Santa Barbara Nine Trails in Santa Barbara, CA offers 35-mile and 17-mile trail endurance runs on March 14, 2026. A 2026 runner guide is available and a waitlist for entries is open; charges occur only after USFS permits and confirmation.

Take on scenic singletrack through Las Virgenes Canyon in Calabasas with creek crossings, switchbacks, and expansive views. Choose a challenging 22k or a fun 10k and enjoy a local finisher medal, hot coffee, and race day photos.

A 35-mile Santa Barbara trail endurance run with over 10,000 feet of elevation change on steep, technical trails. The course is minimally marked, requires GPX navigation, and has long unsupported sections with scheduled aid stations.

A trail race in Valencia near Santa Clarita on March 21, 2026 offering 10K, Half Marathon and 50K courses with singletrack, substantial climbing and panoramic ridgeline views. Timing, aid stations and finisher medals are provided.

Explore oak and chaparral trails in the Santa Ana foothills at the Whiting Ranch Trail Races. Choose 6k, 10k, half marathon or 30k, enjoy marked, supported courses, event swag, and a post race beer from Docent Brewing.

Join the inaugural Hill Canyon Trail Trot 5K in Camarillo, a creekside run through canyon trails and oak lined paths with a free Kiddie K. Proceeds support the Stepping Stones Riding Program and low cost horse experiences.

The Griffith Park Trail Marathon will take place in Los Feliz on Saturday 28 March 2026. You can run between 10 and 50 kilometers.

Challenge yourself at the Billy Goat Mountain Climb on April 4, 2026 in Cleveland National Forest near Silverado CA. Choose the 17 Miler Silverado Loop, Half Marathon or 10K and tackle rugged trails with big climbs and creekside scenery.

Hoppy Easter invites runners to tackle 5k, 10k, 15k and half marathon routes through Griffith Park, Los Angeles on April 4, 2026. Enjoy scenic trails, a custom finisher medal, free photos and snacks for a festive spring run.

On April 11, 2026 in Agoura Hills the Nature Made Great Race offers trail and road options from 1 mile to a half marathon plus combo challenges, scenic Southern California routes, and a large post-race party at Chumash Park.

Yaya's Run in Ventura invites runners to a scenic beach path race at Surfers Point with 5k, 10k, 15k and half marathon options. Join this memorial event for a morning of ocean views, supportive aid stations and finisher medals.

A trail race day in Lake Hughes, CA on April 18, 2026 offering distances from 30K to 100 miles; the 100K and 100M are Western States qualifiers and the 50M awards AC100 Sterling Silver Tickets.